> Instapanic, huh...
>
> Ok, let's put documentation aside and focus on unsupported development 
> features.

Hi, sorry for not replying untiltoday, but basivally we got to the point
where getting the machine sp again was more importnat than debugging so
unfortunately I had to clone the drives off other leaves, so the opportunity
to debug this was lost :-( Sorry...

however, the info below is *very* useful! Thankyou! Will file taht way for
the next time we get any similar issues.

much appreciated.

-pete.

>
> You'll need a list of available transactions:
>
> zdb -ul <vdev>
>
> This one when given a vdev lists all uberblocks with their respective 
> transaction ids. You can take the highest one (it's not the last one) 
> and try to mount pool with:
>
> zpool import -N -O readonly=on -f -R /mnt/somezpool -F -T 
> <transaction_id> <pool>
>
> Then check available filesystems. If it breaks again - retry with older 
> transaction id.
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